In this chapter, we have surveyed a number of sources of freely-available geospatial data. We have learned that:
- OpenStreetMap is a collaborative website where people can create and edit vector maps worldwide.
- TIGER is a service of the US Geological Survey providing geospatial data on streets, railways, rivers, lakes, geographic boundaries, and legal and statistical entities such as school districts and urban regions.
- Natural Earth Data is an excellent source for physical and cultural boundaries in vector format, as well as various raster-format visualizations of the Earth.
- GSHHS is a high-resolution shoreline database containing detailed vector data for shorelines, lakes, and rivers worldwide.
- The World Borders Dataset is a simple vector data ...